EP1178241A2 - Belt tensioning device - Google Patents
Belt tensioning device Download PDFInfo
- Publication number
- EP1178241A2 EP1178241A2 EP01118262A EP01118262A EP1178241A2 EP 1178241 A2 EP1178241 A2 EP 1178241A2 EP 01118262 A EP01118262 A EP 01118262A EP 01118262 A EP01118262 A EP 01118262A EP 1178241 A2 EP1178241 A2 EP 1178241A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- nut
- pulley
- belt
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/14—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of a driving or driven pulley
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S83/00—Cutting
- Y10S83/929—Particular nature of work or product
- Y10S83/932—Edible
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/647—With means to convey work relative to tool station
- Y10T83/6492—Plural passes of diminishing work piece through tool station
- Y10T83/6499—Work rectilinearly reciprocated through tool station
- Y10T83/6537—By cable or belt drive
Abstract
Description
- The present invention is directed to a belt tensioning device, and more particularly, to a device for tensioning a belt to a predetermined tension.
- A variety of machines, mechanisms and other apparatuses use belt and pulley systems to transfer power between two or more rotating components. The belt in such a system is passed around two or more of the pulleys, and is preferably maintained at a specific, predetermined tension. The belt tension should be high enough that the belt does not slip and therefore efficiently transfers power between the pulleys, but the tension should not be so high as to overload the belt.
- In food processing machinery, particularly slicers, the belt/pulley system is often located deep inside the frame of the slicer. Accordingly, it is desirable to easily, accurately and precisely tension the belt in the slicer to reduce the need to access the belt/pulley system.
- The present invention is a belt tensioning device which adjusts a belt to a precise, repeatable tension. The invention also has relatively few parts, and is inexpensive. When using the present invention, the belt can be tensioned to a specified tension without the use of a gauge or other special tools. The invention can be used to accurately set the belt tension during assembly of the associated mechanism or machine. The invention can also be used to tension the belt in the field, for example after disassembling the machine for maintenance.
- In a preferred embodiment, the invention is a belt tensioning device for shifting a pulley such that a belt passed around the pulley is tightened to a predetermined tension. The device includes a rod coupled to the pulley, a member coupled to and movable along the rod, and a spring that exerts a reactive force against the member when the member is moved in a first direction along the rod. The device further includes a spacer which engages the member to limit the advancement of the member in the first direction.
- Other objects and advantages of the present invention will be apparent from the following description and the accompanying drawings.
-
- Fig. 1 is a perspective view of a slicer including the belt tensioning device of the present invention;
- Fig. 2 is a bottom view of the slicer of Fig. 1, with part of the slicer removed to reveal part of the belt tensioning device of the present invention;
- Fig. 3 is a partial cutaway bottom view of the slicer of Fig. 1, showing part of the belt tensioning device of the present invention;
- Fig. 4 is a schematic representation of the belt tensioning device of the present invention, shown in an un-tensioned state;
- Fig. 5 is a schematic representation of the device of Fig. 3, shown in a fully tensioned state;
- Fig. 6 is a schematic representation of the belt tensioning device of the present invention shown in an alternate location and in its fully tensioned state;
- Fig. 7 is an alternate embodiment of the belt tensioning device of the present invention shown in its un-tensioned state; and
- Fig. 8 is a perspective, partial cutaway view of a mixer including the belt tensioning device of the present invention.
-
- As shown in Figs. 1 and 2, the belt tensioning device of the present invention can be used in a slicer, generally designated 10. The
slicer 10 includes aslicer body 12 and atray 14 for receiving a food product (not shown). Thetray 14 is reciprocatingly mounted on theslicer body 12 to bring a food product located on the tray into and out of contact with a rotatingblade 16. Theslicer 10 also includes a motor for driving theblade 16. - As shown in Figs. 2-5, the
motor 20 of theslicer 10 is pivotally mounted about apivot rod 22 by abracket 24. Thepivot rod 22 is preferably stationary and coupled to thebody 12 of theslicer 10. Themotor 20 includes anoutput pulley 26 that is rotatably driven by the motor, and theoutput pulley 26 is coupled to a drivenpulley 28 by abelt 30. The drivenpulley 28 is directly or indirectly coupled to theblade 16 such that rotation of theblade 16 is driven by themotor 20. Theoutput pulley 26 may also drive various other components in theslicer 10, such as the reciprocation of thetray 14 or other functions. - The
belt tensioning device 11 includes anarm 32 that is coupled to themotor 20, and a threadedrod 34 is coupled to thearm 32. As shown in Fig. 3, in one embodiment the threadedrod 34 terminates in aneyelet 60 that receives arod 62 therethrough, to couple the threaded rod and thearm 32. In Figs. 4-5, the connection between therod 34 andarm 32 is schematically illustrated asconnection 51. The threadedrod 34 extends through anopening 36 in awall 38. Alock nut 40 is threaded onto the threadedrod 34 on one side of thewall 38, and anut 42 is threaded onto therod 34 on the other side of thewall 38. Thebelt tensioning device 11 includes aspacer 44 which generally receives aspring 46 therein. Thespring 46 in turn receives the threadedrod 34 therethrough. Thespacer 44 is preferably a hollow tube, and awasher 50 is located between thenut 42 and thespacer 44. - In its state shown in Fig. 4, the
belt tensioning device 11 is disengaged and thebelt 30 is generally slack. In order to tension thebelt 30, thenut 42 is threaded along therod 34 towards thewall 38. As thenut 42 andwasher 50 are moved along therod 34, the nut and washer engage thespring 46 located inside thespacer 44, and begin to compress thespring 46. As thespring 46 is compressed, it exerts a reactive force on thenut 42 and washer 50. The reactive force causes the threadedrod 34 to be pulled through thewall 38 towards thewall 38, and themotor 20 is rotated about thepivot rod 22 in the direction of arrow A. This movement of themotor 20 causes the tension in thebelt 30 to increase. - The
nut 42 andwasher 50 are continued to be advanced onto the threadedrod 34 towards the wall 38 (thereby further compressing thespring 46 and tensioning the belt 30) until the nut/washer engage the spacer 44 (Fig. 5). Thespacer 44 provides a positive force feedback to let the user know that the nut/washer has engaged thespacer 44, and to stop advancing thenut 42 and washer 50 along the threadedrod 34. At this point, the desired tension in thebelt 30 has been achieved. Thelock nut 40 may then be threaded along therod 34 towards thewall 38, until thelock nut 40 engages thewall 38, to further lock thebelt tensioning device 11 in place. It should be noted that the rotation of themotor 20 in the direction of arrow A causes lateral movement of the rod 34 (i.e. left and right motion in Figs. 4 and 5), and theopening 36 should be wide enough to accommodate the expected range of lateral movement. In one embodiment, theopening 36 is generally elliptical, and is wide enough accommodate the expected lateral movement of therod 34. - The length of the
spacer 44 and the spring constant of thespring 46 can be selected to ensure that the desired tension of thebelt 30 is consistently and repeatedly achieved each time thebelt tensioning device 11 is utilized. Accordingly, thebelt tensioning device 11 of the present invention tightens thebelt 30 to a specified tension without requiring the use of gauges or other special tools, and thebelt tensioning device 11 need only be assembled in the above-described manner to ensure that thebelt 30 is properly tensioned. Furthermore, thespring 46 of the present invention is located between thewall 38 and thewasher 50. Because thewall 38 is a fixed component, thebelt tensioning device 11 provides a high degree of control over thespring deflection 46, and thereby the tension in thebelt 30. Additionally, thebelt tensioning device 11 minimizes bending moments in the system. - In an alternate embodiment, the
arm 32 may comprise a variety of lever arms (not shown) to change the leverage of thearm 32 on the rotation of the motor 20 (and thereby optimize the force on the belt 30), or to change the moment arm ratios in the system. Furthermore, a variety of lever arms may be used to change the rotation of themotor 20; that is, a lever arm may be provided to rotate the motor in the opposite direction of arrow A when thenut 42 is tightened down. - The present invention may be implemented in a wide variety of manners beyond the specific embodiment shown herein. For example, although the
spring 46 is preferably received within thespacer 44, it may be located at a variety of locations outside of the spacer. Furthermore, thewall 38 may be replaced with any various type of anchor mechanism, so long as the anchor mechanism provides a surface for opposing the spring force and/or the force exerted by thespacer 44 when thenut 42 andwasher 50 engage the spacer. Furthermore, besides the nut/threaded rod arrangement, nearly any mechanism or member besides the nut that can clamp onto or otherwise engage a rod or other member while compressing thespring 46, may be used. Finally, although thespacer 44 is preferably located around the threadedrod 34, the spacer need not be a tube, and need not be located around the threaded rod. - In a preferred embodiment, the uncompressed length of the
spring 46 is about 18 mm, the spring constant is about 28 N/mm, and the outer diameter of the spring is about 12 mm. Thespacer 44 is about 12 mm long in this embodiment such that thespring 46 is compressed by 6 mm. The reaction force (i.e., the force exerted by thespring 46 on the washer 50) is this case is expected to be about 168 N, which results in a belt tension of about 150 N. Of course, these specifications and dimensions are for one embodiment only, and a variety of sizes and shapes of the various components of the invention may be used without departing from the scope of the invention. - In some cases, due to space or accesiblity requirement, the
belt tensioning device 11 may be located on the opposite side of thearm 32 from that shown in Figs. 4-5. This embodiment is shown in Fig. 6. - Fig. 7 illustrates an alternate embodiment of the invention. The belt tensioning device 11' includes a threaded rod 34' that is anchored to the body of the machine. The
arm 32 of themotor 20 is coupled to the threaded rod 34' by acollar 33 that fits loosely around the threaded rod 34'. Thecollar 33 is free to move up and down the length of the rod 34', and thecollar 33 is preferably pivotably coupled to thearm 32 to allow thecollar 33 to pivot relative to the arm as the collar moves along the length of the rod. - In order to tension the
belt 30 in the device of Fig. 7, thenut 42 is threaded along therod 34 towards thewall 36. Thenut 42 then engages thecollar 33 andwasher 50 and urges them towards thewall 36. This causes themotor 20 to pivot in the direction of arrow A, thereby tensioning thebelt 30. Thesleeve 44 provides a force feedback when thewasher 50 engages thesleeve 44 to provide an indication that thebelt 30 is tensioned to the proper tension. Thelock nut 40 may then be tightened against thewall 38 to lock the device 11' in place. - Although the
belt tensioning device 11 of the present invention is illustrated and described in conjunction with a slicer, it should be understood that the belt tensioning device may be used with nearly any system having a pivotable pulley with a belt passed around the pulley. For example, thebelt tensioning device 11 may be used with amixer 70 as shown in Fig. 8. Themixer 70 includes amixer body 72, amixer bowl 74, and arotatable output component 76. Therotatable output component 76 can releasably receive a mixingelement 78. Theoutput component 76 is coupled to apulley 77, which is in turn directly or indirectly coupled to theoutput pulley 83 of amotor 80 by abelt 81. In this manner themotor 80 can rotate theoutput component 76 and mixingelement 78 to mix the contents of thebowl 74. Themotor 80 is pivotably mounted onto arod 82, andarm 32 and threadedrod 34 portions of thebelt tensioning device 11, which can cause themotor 80 to pivot aboutrod 82 to tension thebelt 81, can be seen. The remainder of the belt tensioning device is the same as thebelt tensioning device 11 disclosed and described above. - Having described the invention in detail and by reference to the preferred embodiments, it will be apparent that modifications and variations thereof are possible without departing from the scope of the invention.
- In the present specification "comprise" means "includes or consists of" and "comprising" means "including or consisting of".
- The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Claims (20)
- A belt tensioning device for shifting a pulley such that a belt passed around said pulley can be tightened to a predetermined tension comprising:a rod coupled to said pulley;a member coupled to and movable along said rod;a spring that exerts a reactive force against said member when said member is moved in a first direction along said rod; anda spacer which engages said member to limit the advancement of said member in said first direction.
- The device of claim 1 wherein said rod is a threaded rod, and said member is a nut threaded onto said threaded rod.
- The device of claim 1 wherein said pulley is located adjacent an anchor component having an opening formed therein, and wherein said rod extends through said opening.
- The device of claim 3 wherein said anchor component is a wall.
- The device of claim 3 wherein said spring is located between said member and said anchor component.
- The device of claim 3 wherein said spacer is located between said member and said anchor component.
- The device of claim 3 wherein said first direction is towards said anchor component.
- The device of claim 3 wherein said spring, said spacer, and said member are located on a first side of said anchor component, and wherein the device further comprises a lock nut located on a second side of said anchor component to secure said threaded rod in place.
- The device of claim 1 wherein said rod extends through said spring.
- The device of claim 1 wherein said rod extends through said spacer.
- The device of claim 1 wherein said spacer receives said spring therein.
- The device of claim 1 wherein said pulley is pivotably mounted such that advancement of said member in said first direction causes said spring to be compressed, which in turn causes said pulley to be pivoted and the tension in said belt thereby increased.
- The device of claim 1 further comprising an arm having a first end and a second end, said first end being coupled to said rod and said second end being coupled to said pulley.
- The device of claim 1 wherein when said rod includes a lever mechanism to vary the force applied upon said pulley as said member is moved along said rod.
- A belt tensioning device for shifting a pulley such that a belt passed around said pulley can be tightened to a predetermined tension comprising:a rod;an arm coupled to said pulley, said arm being movable along said rod;a spring that exerts a reactive force against said arm when said arm is moved in a first direction along said rod; anda spacer which engages said arm to limit the advancement of said arm in said first direction.
- The device of claim 15 further comprising a member coupled to said rod that engages said arm and causes said arm to move in said first direction.
- The device of claim 16 wherein said rod in a threaded rod and said member is a nut threaded onto said rod.
- The device of claim 15 wherein said arm includes a collar that fits around said rod.
- A slicer comprising:a slicer body;a rotatable blade coupled to said slicer body;a reciprocal tray for bringing a food product into and out of contact with said blade;a motor for driving said blade, said motor being pivotable and having an output pulley operatively connected to said blade; anda belt tensioning device for said motor such that a belt passed around said output pulley can be tightened to a predetermined tension, the belt tensioning device including a threaded rod coupled to said motor, said rod being located adjacent an anchor component, a nut threaded onto said threaded rod, a spring located adjacent said nut that exerts a reactive force against said nut when said nut is threaded in a first direction along said rod to cause said motor to pivot, and a spacer which engages said nut to limit the advancement of said nut in said first direction.
- A mixer comprising:a mixer body having a rotatable output component;a bowl that is mountable onto said mixer body;a motor for rotating said output component, said motor being pivotable and having an output pulley operatively connected to said output component; anda belt tensioning device for said motor such that a belt passed around said output pulley can be tightened to a predetermined tension, the belt tensioning device including a threaded rod coupled to said motor, said rod being located adjacent an anchor component, a nut threaded onto said threaded rod, a spring located adjacent said nut that exerts a reactive force against said nut when said nut is threaded in a first direction along said rod to cause said motor to pivot, and a spacer which engages said nut to limit the advancement of said nut in said first direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/630,402 US6935216B1 (en) | 2000-08-02 | 2000-08-02 | Belt tensioning device |
US630402 | 2000-08-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1178241A2 true EP1178241A2 (en) | 2002-02-06 |
EP1178241A3 EP1178241A3 (en) | 2003-06-04 |
Family
ID=24527032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01118262A Withdrawn EP1178241A3 (en) | 2000-08-02 | 2001-07-30 | Belt tensioning device |
Country Status (8)
Country | Link |
---|---|
US (1) | US6935216B1 (en) |
EP (1) | EP1178241A3 (en) |
JP (1) | JP2002130404A (en) |
CN (1) | CN1159535C (en) |
AU (1) | AU746522B2 (en) |
CA (1) | CA2354455C (en) |
MX (1) | MXPA01007819A (en) |
TW (1) | TW555942B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3013789A1 (en) * | 2013-11-28 | 2015-05-29 | Peugeot Citroen Automobiles Sa | DEVICE FOR ADJUSTING THE ARROW OF A TRANSMISSION CHAIN BETWEEN THE CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE AND THE DRIVING SHAFT OF AN OIL PUMP |
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US20060043750A1 (en) * | 2004-07-09 | 2006-03-02 | Paul Wirth | End-effectors for handling microfeature workpieces |
US20070020080A1 (en) * | 2004-07-09 | 2007-01-25 | Paul Wirth | Transfer devices and methods for handling microfeature workpieces within an environment of a processing machine |
US20060120890A1 (en) * | 2004-11-30 | 2006-06-08 | David Moorhouse | Drive system for fluid flow device |
US20090023526A1 (en) * | 2007-07-19 | 2009-01-22 | Gilles Larouche | Pneumatic base for facilitating the installation and tensioning of a drive belt |
CN102018449A (en) * | 2010-10-28 | 2011-04-20 | 孙时泽 | Height adjustable connecting rod |
CN103591232B (en) * | 2013-12-02 | 2016-04-06 | 广州广重分离机械有限公司 | A kind of belt tensioning device of belt transmission disk centrifuge |
US10589439B2 (en) | 2016-06-21 | 2020-03-17 | Globe Food Equipment Company | Blade mounting and removal tool, system, and product slicer |
US10781896B2 (en) * | 2016-07-12 | 2020-09-22 | Wagner Spray Tech Corporation | Belt tightening mechanism for a fluid delivery system |
US10207418B2 (en) | 2016-09-14 | 2019-02-19 | Globe Food Equipment Company | Product slicer and automatic slicer engagement mechanism |
EP3903014A4 (en) * | 2018-12-27 | 2022-08-31 | Valeo Kapec Co., Ltd. | Tilger apparatus for use with rotating bodies |
US20210404539A1 (en) * | 2020-06-29 | 2021-12-30 | E&C Finfan, Inc. | Belt drive automatic adjustment system and method |
CN112090247B (en) * | 2020-10-31 | 2023-01-17 | 张家港市金秋环保科技有限公司 | Electric field line tensioning adjusting device and tensioning adjusting method |
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2000
- 2000-08-02 US US09/630,402 patent/US6935216B1/en not_active Expired - Lifetime
-
2001
- 2001-07-30 AU AU57724/01A patent/AU746522B2/en not_active Ceased
- 2001-07-30 CA CA002354455A patent/CA2354455C/en not_active Expired - Fee Related
- 2001-07-30 EP EP01118262A patent/EP1178241A3/en not_active Withdrawn
- 2001-08-01 TW TW090118703A patent/TW555942B/en not_active IP Right Cessation
- 2001-08-02 MX MXPA01007819A patent/MXPA01007819A/en unknown
- 2001-08-02 CN CNB011245557A patent/CN1159535C/en not_active Expired - Fee Related
- 2001-08-02 JP JP2001235223A patent/JP2002130404A/en active Pending
Non-Patent Citations (1)
Title |
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None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3013789A1 (en) * | 2013-11-28 | 2015-05-29 | Peugeot Citroen Automobiles Sa | DEVICE FOR ADJUSTING THE ARROW OF A TRANSMISSION CHAIN BETWEEN THE CRANKSHAFT OF AN INTERNAL COMBUSTION ENGINE AND THE DRIVING SHAFT OF AN OIL PUMP |
Also Published As
Publication number | Publication date |
---|---|
CA2354455C (en) | 2005-06-28 |
US6935216B1 (en) | 2005-08-30 |
AU5772401A (en) | 2002-02-07 |
JP2002130404A (en) | 2002-05-09 |
MXPA01007819A (en) | 2004-06-25 |
CA2354455A1 (en) | 2002-02-02 |
EP1178241A3 (en) | 2003-06-04 |
CN1336268A (en) | 2002-02-20 |
AU746522B2 (en) | 2002-05-02 |
TW555942B (en) | 2003-10-01 |
CN1159535C (en) | 2004-07-28 |
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